Letters For A Spy by Alice Chetwynd Ley

Elizabeth Thorne has finally seized the opportunity to assert her independence….

When she set out from crowded London to visit Crowle Manor, the Sussex house bequeathed to her by her uncle, Elizabeth could not be more delighted by the prospect of a quiet spell in the country.
But on her way, she soon discovers that Crowle Manor may not be the quiet destination she had in mind…
Waking to discover a strange letter addressed to the manor house has been slipped into her guide book, she cannot help but wonder who put it there…and why?

As her suspicions deepen, Elizabeth finds herself reacquainted with her former lover, Robert Farnham, a man that she had once refused to marry out of loyalty to her sister.
How is he mixed up in this bizarre affair?
And how is it he now seems to hardly recognise her?

As the mysteries surrounding her and Crowle Manor grow more and more intense, Elizabeth starts to realise her plans for a quiet country summer are unlikely to be fulfilled.
But her hopes of being with the man she still loves may yet still come true…